GB466132A - Improvements in or relating to electric amplifier circuits - Google Patents
Improvements in or relating to electric amplifier circuitsInfo
- Publication number
- GB466132A GB466132A GB32410/35A GB3241035A GB466132A GB 466132 A GB466132 A GB 466132A GB 32410/35 A GB32410/35 A GB 32410/35A GB 3241035 A GB3241035 A GB 3241035A GB 466132 A GB466132 A GB 466132A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gain
- resistance
- supply voltage
- valve
- impedance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
- H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/52—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using discharge tubes in series with the load as final control devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Amplifiers (AREA)
Abstract
466,132. Valve circuits. SIEMENS & HALSKE AKT.-GES. Nov. 22, 1935, No. 32410. Convention date, Dec. 17, 1934. [Class 40 (v)] To prevent variations in gain of a thermionic amplifier due to variations of supply voltage, the circuit comprises compensating elements arranged so that the amplifier gain depends on their impedance, which in turn varies with the supply voltage in such manner as to counteract variation in gain. In Fig. 1, a resistance of uranium dioxide is connected across the supply terminals in series with a resistance W. Any increase in supply voltage will increase the gain of valve V but the impedance of H falls to compensate this; by virtue of the connection of anode resistance Ra and condensers C1 C2, H is in parallel with Vy for alternating currents. Alternatively as shown in Fig. 4, the series arrangement of W and H may be applied to a screen-grid valve by connecting their common point to the screen grid ; a non-linear element may be used for H in this case. In a further modification, H is directly connected across V but the operation is as shown in Fig. 1. The resistor H may in the simplest embodiment constitute the anode load resistance Ra, Fig. 3 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE466132X | 1934-12-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB466132A true GB466132A (en) | 1937-05-24 |
Family
ID=6540500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB32410/35A Expired GB466132A (en) | 1934-12-17 | 1935-11-22 | Improvements in or relating to electric amplifier circuits |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2177847A (en) |
| FR (1) | FR798285A (en) |
| GB (1) | GB466132A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2431306A (en) * | 1942-07-09 | 1947-11-25 | Int Standard Electric Corp | Thermionic amplifier |
| US2468082A (en) * | 1942-09-12 | 1949-04-26 | Int Standard Electric Corp | Thermistor circuit compensating for supply voltage fluctuations |
| US2589173A (en) * | 1948-10-22 | 1952-03-11 | Rca Corp | Power supply circuit for multiplier vacuum tubes |
| US2816268A (en) * | 1955-01-05 | 1957-12-10 | Rca Corp | Metering circuit |
-
1935
- 1935-11-22 GB GB32410/35A patent/GB466132A/en not_active Expired
- 1935-11-25 FR FR798285D patent/FR798285A/en not_active Expired
- 1935-12-16 US US54666A patent/US2177847A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2177847A (en) | 1939-10-31 |
| FR798285A (en) | 1936-05-13 |
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